73.21% is the change from 224 to 388
Calculation steps:
[( 388 - 224 ) ÷ 224] x 100 = 73.21%
Formula
Percentage change = [(388 - 224) / 224] x 100
Subtract the new number by the original number
388 - 224 = 164
164 ÷ 224 = 0.7321428571428571
0.7321428571428571 x 100 = 73.21%